<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>登陆验证-非常重要</title>
		<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
		<script>
			function checkUname(){
				//用户输入的
				username=$("#uname").val();
				//验证规则(正则表达式)
				reg = /^[a-zA-Z0-9]{3,10}$/;
				if(!reg.test(username)){
					$("#uname").css("border-color","red");
					return false;
				} else {
					$("#uname").css("border-color","");
					return true;
				}
			}
			function checkUpsw(){
				psw = $("#upsw").val();
				reg = /^[0-9]{6}$/;
				if (!reg.test(psw)){
					$("#upsw").css("border-color","red");
					return false;
				} else {
					$("#upsw").css("border-color","");
					return true;
				}
			}
			function checkALL(){
				checkUname()
				checkUpsw();
			}
		</script>
	</head>
	<body>
		  <h3>用户名是字母和数字的组合，3-10个；密码6个数字</h3>
		用户名<input onblur="checkUname()" type="text" id="uname" />
		密码<input onblur="checkUpsw()" type="password" id="upsw" />
		<button onclick="checkALL()">登录</button>
	</body>
</html>
